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Tempstar Ion 19 Variable-speed Air Conditioner uses a variable-speed condenser - cited at InspectApedia.comTempstar HVAC Age, Manuals, Parts Lists, Wiring Diagrams

PDF Downloads & Contact Info.

Manuals, parts lists, wiring diagrams for Tempstar HVAC equipment, also some Heil, InterCity & Carrier furnaces.

Free downloadable manuals for Tempstar Air Conditioners, Boilers, Furnaces, Heat Pumps. Here we provide free downloadable copies of Tempstar installation and service manuals for heating, heat pump, and air conditioning equipment, or contact information for the manufacturers who can provide that information for nearly all major brands of HVAC equipment.

We include links to contact information for each manufacturer or producer of Tempstar furnaces and related equipment, parts, and installation, repair, wiring diagrams, manuals.

We include immediate downloads of Tempstar installation & repair manuals and wiring diagrams for air conditioners, heat pumps, and heating equipment from a variety of manufacturers as well as contact information to obtain the exact manual or wiring diagram for your unit.

InspectAPedia tolerates no conflicts of interest. We have no relationship with advertisers, products, or services discussed at this website.

- Daniel Friedman, Publisher/Editor/Author - See WHO ARE WE?

Tempstar Heating & Cooling Products

Tempstar F96VTN QuietComfort 96 Gas Furnace cited at InspectApedia.comTempstar is a division of International Comfort Products that in turn is a part of UTC Climate, Controls & Security that is a unit of United Technolgies, Inc.

The Tempstar company provides a wide range of HVAC equipment including air conditioners, air scrubbers, ductless or split system A/C, evaporator coils, fan coils, gas furnaces, geothermal equipment, heat pumps, oil furnaces, packaged HVAC systems, and thermostats.

The company provides a dealer locator page but does not give its own company contact information (at least not that we could find in 2020) at its website. However contact information is provided in the company's documents such as the Oil Furnace Warranty (2021) we include below.

Note that some Tempstar HVAC documents, when observed, appear under the ICP or International Comfort Products label, such as the Oil Furnace warranty listed below. In Turn, ICP documents like the furnace warranty will bear the Carrier brand!

Other furnaces sold under the Tempstar brand are actually manufactured by Heil Corporation.

[Click to enlarge any image]

Tempstar HVAC Age Decoder

Tempstar HVAC equipment manufacturing date is usually encoded in the serial number

YYWW567890

or in the serial number format

XYYWW56790

(ignore the first alphabetic character, pick up the first four numeric digits, and decode them as YYWW as we illustrate here.

Use the first four numeric digits that form YYWW where YY is year of manufacture and WW is week of manufacture in that year.

The remaining numeric digits, usually 5, form a unique serial numer or manufacturing sequence number of the equipment.

This same manufacturing date encoding appears in most HVAC equipment distributed under the ICP brands of:

Arcoaire, Comfortmaker, Heil, ICP, International Comfort Products, Inter-City Products, Keeprite, Tempstar, and UTC, United Technologies Inc.,

Tempstar HVAC Installation & Service Manuals

Tempstar furnace combustion air inlet (C) InspectApdia.com

Above: questions about the safety of this Tempstar heater are discussed at CONDENSING GAS FURNACE INSPECTION & TESTS

Tempstar condensing gas furnace data tag from 1990, Model No. NULK075DG05 - this is a NULK series - manual found on this page (C) InspectApedia.com Melissa

Tempstar OLV QuietComfort87 Low Boy Oil Furnace cited at InspectApedia.com

Above: the Tempstar OLV QuietComfort®87 ow Boy Oil Furnace, described at the Tempstar website, a member of the ICP or International Comfort Products company, whose furnace warranty names the Carrier Corporation, and whose furnace is also sold under the Heil Heating & Cooling Products brand (Screenshot just below, 2021/05/17 taken at https://www.heil-hvac.com/en/us/products/oil-furnaces/87-low-boy-oil-furnace/)

Heil Tempstar ICP Carrier OLV QuietComfort87 Low boy oil furnace at InspectApdia.com

Also see HEIL® Heating & Cooling Products [web page]

Tempstar PGD-Series Rooftop Unit Model Number Decoder - cited & discussed at InspectApedia.com ICP Tempstar manual source

[Click to enlarge any image]

Also see the HVAC Manuals at

Tempstar Furnace Error Codes

Some Tempstar furnaces provide a light emitting diode (LED) status code display to aid the installer, service technician, or homeowner while installing or servicing the unit.

The LED code can be seen through the view port in the blower access panel. The company advises:

NOTE: Record the LED status code BEFORE removing the blower access door or turning off 115-v power to the furnace. See the information booklet inside the main furnace door for a service code legend

Tempstar Furnace Error Codes

   
LED Flash Pattern Signifies

Action

Pulsing "heartbeat"

or

LED on solid

 Safety lockout

Auto reset in 1 hr

or

Power off-on to reset
2 flashes Pressure switch closed

Clear pressure tubing obstruction

or

replace pressure sensor switch
3 flashes Low pressure switch stuck open

Check flue vent for obstruction,
or missing cap (wind backpressure)
improper vent sizing, inadequate draft

Check for clogged condensate drain

Check for inadequate gas supply

Check for loose switch electrical connections

Check for obstructed pressure sensor tubing
4 flashes Limit circuit fault

Check for dirty air filter

Check for loose switch connections

Check for loose blower squirrel cage fan

Check for improper gas input setting

Check for duct crimp, collapse, obstruction

Replace limit switch
5 flashes Bad burner flame

Check for gas valve not closing properly

Check for gas leaks

Check for soot (very dangerous) on burners
6 flashes Ignition failure

Check for inadequate gas supply or pressure

Check for loose control ground wire connection

Check for improper grounding of flame sensor

Clean flame sensor for soot or dirt or oxide - clean

Check flame sensor position in flame

Replace hot surface igniter
7 flashes Limit circuit lockout

Auto reset after 3 hours

See code 4
8 flashes Gas heat lockout Gas valve stuck closed
9 flashes

Medium or high pressure switch failure

PSR relay oopen

 see Status code 3
10 flashes Reversed polarity Check power supply wiring
Status code 1 & 2 Blower is on after power-on Normal condition
Status code 1 & 4 Blower motor problem

Blower did not reach 250 rpm

Check for bad blower bearings

Check blower wiring
Status code 1 & 5 Blower motor lockout Auto reset after 3 hours
Status code 1 & 6 Ignition lockout Auto reset after 3 hours
Status code 3 & 5 Gas valve failure

Check wire connections at gas valve

(red, orange, yellow wires)
Status code 4 & 2 Inducer motor failure

Check for draft problem: wrong vent size, blocked vent

Check for bad wiring connection at motor

Check for blocked sensor tubing to pressure switch

Replace bad inducer motor
Status code 4 & 3

Low / medium pressure swith open +

medium / high pressure switch closed

Check low gas inlet pressure

Check for blocked vent or water in vent

Check for bad wiring connection at switch

Check for clogged condensate drain

Check for blocked or disconnected pressure sensor tube

NO LIGHTS & heat is "on"

power is off to the heater

Check power supply

Be sure furnace power switche(s) are ON

Check / press the RESET button

Watch out: do not keep doing this if the heater doesn't start & keep running

Notes to the table above

...


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Reader Comments, Questions & Answers About The Article Above

Below you will find questions and answers previously posted on this page at its page bottom reader comment box.

Reader Q&A - also see RECOMMENDED ARTICLES & FAQs

Question: need a manual for a 1990 Tempstar Furnace

I am in desperate need of some help. Bought a 1990 used tempstar furnace online and no manual no direction on installing properly  - M.M. 2023/10/06

- re-posted from private email

Moderator reply:

Sure I can help. Best would be if you posted your request and a photo of the furnace data tag online at our page - TEMPSTAR HVAC Products - [above on this page]

Reader follow-up:

Yes I need help with that, please. MM

Tempstar condensing gas furnace data tag from 1990, Model No. NULK075DG05 - this is a NULK series - manual found on this page (C) InspectApedia.com Melissa

Moderator Reply: Here's the IO Manual for your Tempstar NU-series Gas Furnace

Found above on this page, this manual:

we replied that inspectapedia.com/heat/Tempstar-NU-Service-Manual.pdf should work for you. Take a look at that document. Don't hesitate to post or ask follow up questions

Question:

Dan Hi - looking for manual for ICP furnace model t9mpd100j2081. Please help! - 2022/10/08

Moderator reply:

Wee the ICP MANUALS given by the ICP link at the start of the article above. Your manual is there.

Question: Tempstar Furnace NFCP not working after lightning strike

Hello I've got a slight problem with my Tempstar Furnace, (Model NFCP3600A, Serial L9739 36772). Recently there was a lightning strike near the house, about 10 feet away.

Afterwards I noticed it was getting hot in the house even with the AC running. After some investigating I discovered that the lightning strike affected the furnace causing both the heat and the fan to run continuously.

For a temporary fix the heating coils were disconnected to prevent them from working, and the fan is running constantly.

I will eventually need a working heater, and a fan running 24/7 will get expensive so I need to find a solution.

Is there a part that I can find and replace or is this furnace a lost cause that should be replaced now?

- James Moore 2023/07/08

Moderator reply:

Possibly. A power surge could have fried the control board in your Tempstar furnace. The control board determines when the fan runs as well as other functions.

I'd want an experienced service technician onsite to check the control board and relays in the heater - it may be a simple parts swap-in.

Question: Tempstar furnace, no heat, need wiring diagram

Tempstar Furnace T9MPT100J16A3 data tag (C) InspectApedia.com AJ Maxwell

Hello I need help. I am a new home owner and have a family of 10 believe it or not. I have a tempstar furnace and the model number is in the picture with the barcode.

And in the other picture shows my furnace with a wire issue. I bought new dual pressure switches which are in the next photo.

Tempstar furnace no heat diagnosis (C) InspectApedia.com AJ Maxwell

[Click to enlarge any image]

My issue is that I don’t know where to hook up which wire to the blue -1.50 transition switch.

Tempstar furnace no heat diagnosis (C) InspectApedia.com AJ Maxwell

It’s very cold in my house right now and I am using a kerosine heater to keep my little ones warm but I really need to get this fixed ASAP.

I would be very thankful for any advice or a picture of a wiring diagram because I just can’t find one for the model of my furnace.

Can anyone please help? - 2021/12/23 AJ Maxwell

Moderator reply:

AJ are you seenng an LED flash code on your Tempstar furnace? If so check the table of Tempstar error codes at the bottom of the article above.

Watch out: using a kerosene heater indoors can risk fatal carbon monoxide poisoning.

Be SURE you have working smoke and CO detectors properly located, installed, tested - immediately.

I'm not sure a wiring diagram is going to fix your heater - first you need a confident diagnosis of why you have no heat.

If you haven't already done that you might check the steps given at

HEAT WON'T TURN ON

You can download and see wiring diagrams and other instructions for your furnace using this link:

TEMPSTAR / KENMORE FURNACE INSTALLATION MANUAL [PDF]

and there find wiring instructions and a wiring diagram.

 

Question: how to adjust the aux heat temperature

My tempstar heatpump setting to switch at 34 degrees to aux heat was changed to a higher temp, how do I put it back to 34degrees.

Jim Apking 2021/11/23

Moderator reply:

If I understand your question correctly (when the heat pump switches to AUX HEAT ) - that is to say, we are NOT talking about switching to "Emergency heat"

then that switch point is set in your thermostat by its manufacturer to automatically call for AUX HEAT when the indoor temperature, as sensed by the thermostat, drops 3 degrees below the temperature you've called for at the thermostat.

E.g. if your thermostat is set to 68 degF the AUX heat will come on if the temp. drops to 65 degF or below. The reason heat pumps work this way is that larger temperature swings (or a too-large night-time setback) are considered inefficient when heating by a heat pump.

It is possible to re-set the AUX HEAT turn-on point to other differences such as sooner (just 1 degF difference - not recommended) or later (e.g. 5 degF difference) but most homeowners will need to call their heating service tech to make that change.

If you're about as net-savvy as I thought I was you'll have a devil of a time finding the manual for at least some Tempstar products at the comopany's website.

You can contact Tempstar by email at https://www.tempstar.com/en/us/contact-us/

The procedure to change the AUX HEAT turn on gap varies by brand and model of your thermostat.

For example if yours is a Nest thermostat, Google says

If Heat Pump Balance is enabled, you don't have to worry about the lockout temperature. Just choose whether you want more comfort or more savings,
and the Nest thermostat will learn to adjust your lockout temperature as needed.

Because AUX heat is so expensive, running the heat pump longer can be cheaper than using AUX heat. Heat Pump Balance can automatically turn the heat on early to reduce AUX heat use as much as possible and get to your target temperature on time.

Heat Pump Balance can turn on the heat up to 5 hours before a scheduled temperature, if necessary.


...

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